Sound level meter



FIG. 1 is a perspective view of a sound level meter;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is an end view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is an opposite end view thereof.

The ornamental design for sound level meter, as shown and described.